<template>
  <div class="tabs">
<el-tag
v-for="(tag,index) in tags"
:key="tag.name"
:closable="tag.name!=='home'"
:effect="$route.name===tag.name?'dark':'plain'"
@click="changeMenu(tag)"
@close="handleClose(tag,index)"
size="small"
>

{{tag.label}}
</el-tag>

  </div>
</template>

<script>
import {mapState,mapMutations} from 'vuex'
export default {
    name:'CommonTag',
    data(){
        return{

        }
    },
    computed:{
        ...mapState({
            tags:state => state.tab.tabsList
        })
    },
    methods:{
        ...mapMutations({
            close:'closeTag'

        }),
        changeMenu(item){
            this.$router.push({ name: item.name })
        },
        handleClose(tag,index){
            const length = this.tags.length - 1
            this.close(tag)
            if(tag.name !== this.$route.name){
                return;
            }
            if(index === length){
                this.$router.push({
                    name: this.tags[index - 1].name
                })
            }else{
                this.$router.push({
                    name: this.tags[index].name
                })
            }

        },
        closeTag(state,val){
          const result = state.tabsList.findIndex(item => item.name === val.name)
          state.tabsList.splice(result, 1)
        }
    }

}
</script>

<style lang="less" scoped>
.tabs{
    padding: 20px;
    .el-tag{
        margin-right: 15px;
        cursor: pointer;
    }
}

</style>